X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Froute.c;h=664fed89fbd102edb543b637ed7148edaa2009d9;hp=77bec047b4738f0c2c6a18789aebe3546714735c;hb=40d91ff619a6ea24a2a35c9d934bcc6bace27e24;hpb=95928f7c2910a7da01a89cdc63c86c4d87fac004

diff --git a/src/route.c b/src/route.c
index 77bec047..664fed89 100644
--- a/src/route.c
+++ b/src/route.c
@@ -1,7 +1,7 @@
 /*
     route.c -- routing
     Copyright (C) 2000-2005 Ivo Timmermans,
-                  2000-2009 Guus Sliepen <guus@tinc-vpn.org>
+                  2000-2010 Guus Sliepen <guus@tinc-vpn.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -94,7 +94,7 @@ static bool checklength(node_t *source, vpn_packet_t *packet, length_t length) {
 }
 
 static void clamp_mss(const node_t *source, const node_t *via, vpn_packet_t *packet) {
-	if(!via || via == myself)
+	if(!via || via == myself || !(via->options & OPTION_CLAMP_MSS))
 		return;
 
 	/* Find TCP header */
@@ -112,6 +112,9 @@ static void clamp_mss(const node_t *source, const node_t *via, vpn_packet_t *pac
 	/* Use data offset field to calculate length of options field */
 	int len = ((packet->data[start + 12] >> 4) - 5) * 4;
 
+	if(packet->len < start + 20 + len)
+		return;
+
 	/* Search for MSS option header */
 	for(int i = 0; i < len;) {
 		if(packet->data[start + 20 + i] == 0)
@@ -185,6 +188,7 @@ static void learn_mac(mac_t *address) {
 		subnet->net.mac.address = *address;
 		subnet->weight = 10;
 		subnet_add(myself, subnet);
+		subnet_update(myself, subnet, true);
 
 		/* And tell all other tinc daemons it's our MAC */
 
@@ -220,6 +224,7 @@ void age_subnets(void) {
 					send_del_subnet(c, s);
 			}
 
+			subnet_update(myself, s, false);
 			subnet_del(myself, s);
 		}
 	}